добавлено отключение подсказок

main.cpp

@@ -13,11 +13,14 @@ struct Input
     vector<string> colors;
 };
 
-Input input_data(istream& inp)
+Input input_data(istream& inp, bool prompt)
 {
     Input in;
     size_t number_count;
+
+    if(prompt){
         cerr << "Enter number_count: ";
+    }
     inp >> number_count;
 
     in.numbers.resize(number_count);
@@ -27,7 +30,9 @@ Input input_data(istream& inp)
         inp >> in.numbers[i];
     }
 
+    if(prompt){
         cerr << "Enter bin_count: ";
+    }
     inp >> in.bin_count;
 
     in.colors.resize(in.bin_count);
@@ -40,7 +45,7 @@ Input input_data(istream& inp)
 
 int main()
 {
-    auto in = input_data(cin);
+    auto in = input_data(cin, true);
     auto bins = make_histogram(in.numbers, in.bin_count);
     show_histogram_svg(bins, in.colors);
     return 0;